Respirators – Which One? Does It Fit?

Matching the respiratory protective device with the situation is as important as selecting the right tool

for the job.

Popular Science, December 1940. http://blog.modernmechanix.com/vest-pocket-respirator-guards-workers-lungs/

WPS New Requirement

WPS-labeled pesticide products: Respirator Requirements per OSHA 1910.134 Medical Evaluation Fit test

• Only NIOSH Certified Respirators permitted Training Recordkeeping

WPS Respirator Use

Follow the: Label WPS medical evaluation, fit testing and cleaning

WPS does not require a written respirator program

“Ag” Respirator Use

For non-”Agricultural Use” pesticides and chemicals MIOSHA Part 700 applies Part 700 does not require a written respirator program

For respirator required “non-agricultural” work activities (even though done on a farm) MIOSHA Part 451 applies Part 451 requires a written respirator program

The Respiratory System

http://philschatz.com/anatomy-book/contents/m46548.html

Particle Size Matters

http://www.acrd.bc.ca/particulate-matter

Particle Size Matters

Two Classes of Respirators

Air-purifying respirators - respirators with an air-purifying device (filter, cartridge/canister) that removes air contaminants before the air is inhaled. Negative Pressure (wearer doing the work) Positive Pressure (pump doing the work)

Atmosphere-supplying respirators - provide clean breathing air from an uncontaminated source

Air Purifying Respirators

Tight Fitting: Medical Evaluation Fit Test User Seal Check

Loose Fitting: Medical Evaluation

Tight Fitting

Loose Fitting

Air Purifying, Tight Fitting, Negative Pressure Respirators Filtering facepiece (dust mask)

Elastomeric respirators Uses replaceable filters, canisters and cartridges

OSHA APF = 10

OSHA APF = 10

Full-faceHalf-face

OSHA APF = 50

Air Purifying, Loose-Fitting, Positive Pressure Respirators

OSHA APF = 25Uses replaceable filter (mounted in helmet)

3M OSHA APF=1000

Choosing a Respirator Depends upon: Type and concentration of contaminant Need for eye, face protection Need for supplemental air/oxygen Presence of facial hair

Make sure NIOSH certified

Choosing a Respirator: Facial Hair Dilemma

NIOSH Approval System for Particulate Filters N95/R95/P95 masks filter

out 95% of dust particles N=Not resistant to oil,R=Somewhat resistant to oil,P=Strongly resistant to oil

N99/R99/P99 masks filter out 99% of dust particles

N100/R100/P100 masks filter out 99.97% of dust particles

http://www.gemplers.com/images/items/8293-lrg jpg

https://www.cdc.gov/niosh/npptl/topics/respirators/disp_part/respsource1quest2.html

PresenterPresentation NotesThe NIOSH respirator approval regulation defines the term N95 to refer to a filter class that removes at least 95% of airborne particles during “worse case” testing using a “most-penetrating” sized particle during NIOSH testing.

Choose FilterChoose FilterEfficiencyEfficiency

(95%, 99%, 99.97%)(95%, 99%, 99.97%)

Does theDoes theAerosol ContainAerosol Contain

Oil?Oil?

Will FilterWill FilterBe Used More ThanBe Used More Than

8 Hours? 8 Hours?Use N, R, or PUse N, R, or PSeries FilterSeries Filter

Use PUse PSeries FilterSeries Filter

Use RUse RSeries FilterSeries Filter

YESYES

NONOYESYES

NONO

Dust Masks (filtering facepieces)

Dust masks capture airborne particles (dust, mist, fumes) but not gases or vapors (unless equipped with charcoal layer)

Specific WPS rules for filter replacement Family farm owner exempt

https://farm3.staticflickr.com/2794/4211215059_d80da56913_z.jpg

Half Mask/Full Face Gas & Vapor cartridge Chemical cartridges

trap different types of chemicals, but not dusts, mists or fumes

Particulate cartridge Trap particulates only

Combination cartridge Will trap both gas/vapor

+ particulate

Powered Air Purifying Respirators

Has battery-powered fan that draws air through cartridges and blows it into the facepiece

Can provide better protection than other cartridge respirators Special filter: Only HE (High

Efficiency) filters used: Filters at least 99.97% of airborne particles.

PresenterPresentation NotesPower sources are usually a battery or a plug-in (i.e.,to tractor cigarette lighters). Batteries must last at least 4 hours. Here’s how they work:The battery powers a small fan that sucks air into the unit and through the air purifying elements (this is mechanically produced negative pressure). This clean air is then blown to the wearer through a tube at a minimum steady amount (or flow rate) of 4 cubic meters per minute. The result is a cool, purified air supply to the user.

These are designed to provide only a constant amount of air over time so in case of heavy exertion, there is a risk ofr leakage around the edge of the mask because the user may breathe at rate higher then 4 cubic meters per minute. This is why we avoid calling these respirators true “positive-pressure” respirators. In general, they are usually more protective than non-powered types.

As you can see PAPRs come in tight-fitting and loose-fitting styles. These are also available in half-face models. Some models are designed to use one cartridge and some may use three! Most cartridges are bigger in capacity compared to those used in non-powered types so they may be good to consider if you want a longer lasting air purifying element.

Air Supplied

Air supplied from another source Medical

evaluation Fit Test

Questions?

Deciphering a Pesticide Label

42 CFR Part 84 Rule Changes Changed Respirator Certifications July 1995: National Institute of Occupational Safety and

Health (NIOSH) upgraded the tests used to certify non-powered air purifying particulate respirators. TC: Test and Certify Does not change chemical cartridge, SCBA, airline,

gas mask, PAPR types Testing requirements for the following respirators or filters

are eliminated: Single use dust/mist respirators Dust/mist respirators Dust/mist/fume respirators Radon daughter respirators Pesticide prefilters Paint spray prefilters

NIOSH TC Designations Air Supplied Respirators

13F: self-contained breathing apparatus (SCBA) 19C: supplied air respirator (SAR)

Air Purifying Respirators 14G: gas mask with canister 23C: air-purifying respirator (APR) with chemical cartridge

• Half- or full-facepiece 84A: respirator with particulate filter or combination

chemical cartridge with particulate filter• Filtering facepiece• Half- or full-facepiece

Powered Air Purifying Respirators 23C: powered air-purifying respirator (PAPR) with chemical

cartridge and particulate filter 21C: powered air-purifying respirator (PAPR) with

particulate filter

Translation Key for Respirator on EPA labels

OUTDATED Respirator terms used on EPA pesticide labels

Current NIOSH respirator terms used on labels

NIOSH/MSHA NIOSH

Dust/Mist Particulate

Pre-filter approved for pesticides N, R, or P filter, to be used in combination with a chemical cartridge

Canister approved for pesticides Canister (contaminant specific)

N, R, P or HE filters N, R or P (HE filters can only be used on Powered Air-Purifying Respirators (PAPRs)

Label Example

Mixer Loaders, applicators and all other handlers must wear …

And NIOSH approved dust/mist filtering respirator (MSHA/NIOSH approval number prefix TC-21C or a NIOSH approved respirator with any N, R, P or HE filter

Remember! Dust Mist = Particulate

NIOSH Particulate Respirators

TC-21C

TC-84A TC-84A TC-84A

Label Language

For exposures in enclosed areas wear a respirator with an organic vapor removing cartridge with a pre-filter approved for pesticides (MSHA/NIOSH approval number prefix TC-23C)

Correct??

Look for the COMPONENTS:

not the number!

Correct??TC-23C

TC-84A

NIOSH TC-84A vs TC-23C

Organic Vapor with combination N95 filter

TC-23C

XOrganic Vapor Cartridge only

TC-84A

A NIOSH approved particulate respirator with any N, R or P filter (NIOSH approval TC-84A); or a powered air purifying respirator (PAPR) with HE filters (NIOSH approval TC-21C)

A NIOSH approved respirator with an organic vapor (OV) removing cartridge with any combination N, R, or P filter (NIOSH approval number prefix TC-84A); or an OV canister (NIOSH approval prefix TC-14G; or a powered air purifying respirator (PAPR) with HE filters (NIOSH approval prefix TC-23)

Bottom Line…

The respirator you use must fit you and be right for the job that you do!

Respirators – Which One? Does It Fit?WPS New RequirementWPS Respirator Use“Ag” Respirator UseThe Respiratory SystemParticle Size MattersParticle Size MattersTwo Classes of RespiratorsAir Purifying RespiratorsAir Purifying, Tight Fitting, Negative Pressure RespiratorsAir Purifying, Loose-Fitting, Positive Pressure RespiratorsChoosing a RespiratorChoosing a Respirator: Facial Hair DilemmaNIOSH Approval System for Particulate FiltersSlide Number 16Dust Masks (filtering facepieces)Half Mask/Full Face Powered Air Purifying RespiratorsAir SuppliedQuestions?Deciphering a Pesticide Label42 CFR Part 84 Rule Changes Changed Respirator CertificationsNIOSH TC DesignationsTranslation Key for Respirator on EPA labelsLabel ExampleRemember! Dust Mist = ParticulateLabel LanguageNIOSH TC-84A vs TC-23CSlide Number 41Slide Number 42Bottom Line…